Inon UFL-G140 ZD Underwater Semi-fisheye Conversion Lens
Inon UFL-G140 ZD Underwater Semi-fisheye Conversion Lens
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Overview / Product Description
Inon UFL-G140 ZD Underwater Semi-fisheye Conversion Lens
The UFL-G140 ZD provides wild wide underwater footage at nearly the same view angle as using GoPro on land.
Ultra-Wide Even Underwater
Though an action camera is equipped with an ultra-wide lens, its coverage underwater will dramatically narrow down due to the different refraction ratio between air and water. For example, the maximum angle of view of GoPro® HERO11 Black is approx. 156° on land which will narrow down to approx. 94° when we put the camera in genuine dive housing and bring it underwater due to different refraction index. The INON UFL-G140 ZD provides ultra-wide semi-fisheye imaging with angle of view 140° underwater enabling wild underwater video work only with action cameras.
* Measured angle of view by INON or calculated angle of view underwater based on the measured angle of view. Not confirmed by camera manufacture. The measured angle of view of “HERO3+ Silver Edition” is approx. 142°(air) which is less wide than the “Black Edition”. So angle of view underwater with this lens is less than 140°. The “HERO3+ White Edition” has not been tested.
Dynamic CFWA Imaging
Theoretically, the depth of field (DoF) of the GoPro Black Edition on land are approx. 60cm/2ft to . With the INON UFL-G140 ZD, DoF underwater will be extended to 4cm/1.6in to for HERO4/HERO3+ or 10cm/3.9in to for HERO3 enabling you to shoot a subject at close range to benefit deformed and/or perspective result.
* DoF on land is based on focal length/aperture of the camera lens and pixel pitch of the image sensor. DoF underwater is measured from "the forefront of the lens". Other Edition has not been tested.
Professional-level Image Quality
The UFL-G140 ZD is constructed of 4 elements in 4 groups. The rear element is made from a high refractive index glass lens to minimize the whole size dramatically without sacrificing performance. The front acrylic dome has five layers of multi-coating on its inner surface providing the same grade of image quality as an optical glass dome at affordable pricing.
Speedy Lens Exchange by ZD Mount
Bayonet INON ZD Mount compatible to support friendly and speedy lens exchange underwater.
Specs:
- Size: 93.4mm / 3.7in (Diameter), 41.8mm / 1.6in (Length)
- Weight
- [air] 300g / 10.6oz
- [underwater] approx. 153g / 5.4oz
- Mount system: INON ZD Mount
- Depth rating: 60 / 196.9ft
- Body material/finishing: Corrosion-resistant aluminum alloy / rigid black alumite, PC etc.
- Lens material/coating
- Optical glass/both side coating,
- Optical plastic/both side hard coating, inner multi-coating
- Depth of field: 4cm / 1.6in to ∞
- Lens construction 4 groups 4 elements
- Max. view angle 140.0°(underwater)